Operations with positives and negatives

Would the following problem have a positive or negative answer?
 $-718+368$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $21-\left(-91\right)$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $-37\times45$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $-23+\left(-17\right)$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $-469\div-58$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $729-1025$  

• positive

• negative

Would the following problem have a positive or negative answer?
 $-\frac{23}{57}\left(-1\ \frac{19}{56}\right)$  

• positive

• negative

Simplify.
 $4-\left(-3\right)$  

• 15

• -1

• 7

• 12

Simplify.
 $7+\left(-6\right)$  

• 2

• 3

• 1

• 8

Simplify.
 $4-3$  

• -2

• 9

• 1

• -1